Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/35141
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Regis, Marco | en_US |
dc.contributor.author | Korsmeier, Michael | en_US |
dc.contributor.author | BERNARDI, Gianni | en_US |
dc.contributor.author | PIGNATARO, GIADA VENUSTA | en_US |
dc.contributor.author | Reynoso-Cordova, Javier | en_US |
dc.contributor.author | Ullio, Piero | en_US |
dc.date.accessioned | 2024-05-29T08:20:42Z | - |
dc.date.available | 2024-05-29T08:20:42Z | - |
dc.date.issued | 2023 | en_US |
dc.identifier.issn | 1475-7516 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/35141 | - |
dc.description.abstract | Radiative emissions from electrons and positrons generated by dark matter (DM) annihilation or decay are one of the most investigated signals in indirect searches of WIMPs. Ideal targets must have large ratio of DM to baryonic matter. However, such "dark"systems have a poorly known level of magnetic turbulence, which determines the residence time of the electrons and positrons and therefore also the strength of the expected signal. This typically leads to significant uncertainties in the derived DM bounds. In a novel approach, we compute the self-confinement of the DM-induced electrons and positrons. Indeed, they themselves generate irregularities in the magnetic field, thus setting a lower limit on the presence of the magnetic turbulence. We specifically apply this approach to dwarf spheroidal galaxies. Finally, by comparing the expected synchrotron emission with radio data from the direction of the Draco galaxy collected at the Giant Metre Radio Telescope, we show that the proposed approach can be used to set robust and competitive bounds on WIMP DM. | en_US |
dc.language.iso | eng | en_US |
dc.title | The self-confinement of electrons and positrons from dark matter | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1088/1475-7516/2023/08/030 | en_US |
dc.identifier.scopus | 2-s2.0-85169889506 | en_US |
dc.identifier.url | https://iopscience.iop.org/article/10.1088/1475-7516/2023/08/030 | en_US |
dc.identifier.url | https://api.elsevier.com/content/abstract/scopus_id/85169889506 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 2023 | en_US |
dc.relation.issue | 8 | en_US |
dc.relation.firstpage | 030 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.international | sì | en_US |
dc.contributor.country | ITA | en_US |
dc.contributor.country | SWE | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.relation.ercsector | ERC sectors::Physical Sciences and Engineering::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation | en_US |
dc.description.apc | no | en_US |
dc.description.oa | 1 – prodotto con file in versione Open Access (allegare il file al passo 5-Carica) | en_US |
item.grantfulltext | open | - |
item.cerifentitytype | Publications | - |
item.openairetype | Article | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
item.languageiso639-1 | en | - |
crisitem.journal.journalissn | 1475-7516 | - |
crisitem.journal.ance | E184073 | - |
crisitem.author.dept | IRA Bologna | - |
crisitem.author.dept | IRA Bologna | - |
crisitem.author.orcid | 0000-0002-0916-7443 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
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regis23.pdf | published version | 1.95 MB | Adobe PDF | View/Open |
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